{"product_id":"mars-hydro-15l-ultrasonic-cool-mist-plant-humidifier","title":"Mars Hydro 15L Ultrasonic Cool Mist Plant Humidifier","description":"\u003cp\u003eThe Mars Hydro 15L Ultrasonic Humidifier is a high capacity cool mist humidifier designed for grow tents, plant rooms, greenhouses, and other indoor growing spaces that require stable humidity over longer periods.\u003c\/p\u003e\n\u003cp\u003eWith a 15L top fill tank, maximum mist output of 1.6L per hour, and coverage rated up to 861 ft², the unit is built for larger spaces where smaller tabletop humidifiers require constant refilling.\u003c\/p\u003e\n\u003cp\u003eA wired temperature and humidity sensor continuously monitors the surrounding environment, while the built in humidistat can automatically pause humidification once the selected relative humidity level is reached. Four mist output levels, a 1 to 12 hour timer, remote control, flexible distribution hoses, and multiple nozzle configurations give growers control over both how much moisture is produced and where it is delivered.\u003c\/p\u003e\n\u003cp\u003eMars Hydro rates maximum runtime at approximately 29 hours, depending on selected mist output and environmental conditions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e15L top fill water tank\u003c\/li\u003e\n\u003cli\u003eUp to 1.6L\/hr mist output across 4 levels\u003c\/li\u003e\n\u003cli\u003eCoverage up to 861 ft²\u003c\/li\u003e\n\u003cli\u003eAutomatic humidistat, 1–12 hour timer, and remote control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e15L High Capacity Water Tank\u003c\/h3\u003e\n\u003cp\u003eThe humidifier uses a 15 liter reservoir, reducing the need for frequent refilling during extended operation. The top fill design allows water to be added directly through the upper tank opening without removing the entire reservoir from the machine.\u003c\/p\u003e\n\u003cp\u003eMars Hydro recommends maintaining the water level within the designated range and specifically advises using distilled water to reduce mineral deposits inside the humidifier.\u003c\/p\u003e\n\u003ch3\u003eUp to 1.6L\/hr Mist Output\u003c\/h3\u003e\n\u003cp\u003eMaximum humidification output is approximately 1.6 liters per hour. The humidifier offers four selectable mist levels:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLevel 1:\u003c\/strong\u003e 0.51L\/hr\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLevel 2:\u003c\/strong\u003e 0.66L\/hr\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLevel 3:\u003c\/strong\u003e 1.23L\/hr\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLevel 4:\u003c\/strong\u003e 1.60L\/hr\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis allows growers to reduce output for smaller spaces or lower humidity requirements and increase output when faster moisture delivery is needed.\u003c\/p\u003e\n\u003ch3\u003eUp to 861 ft² Coverage\u003c\/h3\u003e\n\u003cp\u003eMars Hydro rates the unit for spaces up to approximately 861 square feet. Actual performance will depend on room volume, ventilation, temperature, existing humidity, and how frequently air is exchanged.\u003c\/p\u003e\n\u003cp\u003eFor grow tent applications, the included hose system can route mist directly into the enclosure while the main humidifier remains positioned outside or beside the tent.\u003c\/p\u003e\n\u003ch3\u003eAutomatic Humidity Control\u003c\/h3\u003e\n\u003cp\u003eThe built in humidistat allows target humidity to be set from 35% to 95% RH in 5% increments. Once the selected humidity level is reached, the humidifier automatically pauses mist production, resuming when humidity drops below the target.\u003c\/p\u003e\n\u003cp\u003eThis creates a more stable environment than simply running the humidifier continuously at one fixed output. Mars Hydro lists 14 selectable humidity levels across the 35% to 95% range.\u003c\/p\u003e\n\u003ch3\u003eWired Temperature and Humidity Sensor\u003c\/h3\u003e\n\u003cp\u003eThe included wired probe measures environmental conditions away from the humidifier itself. This can provide a more representative reading of the actual growing area, particularly when the humidifier is positioned outside a tent and mist is delivered through a hose.\u003c\/p\u003e\n\u003cp\u003eThe display automatically alternates between temperature and timer information while also showing the measured humidity level.\u003c\/p\u003e\n\u003ch3\u003eTemperature and Humidity Calibration\u003c\/h3\u003e\n\u003cp\u003eThe sensor readings can be calibrated when required. Mars Hydro allows both temperature and humidity calibration adjustments to be entered and permanently saved.\u003c\/p\u003e\n\u003cp\u003eThis is useful when comparing the humidifier's sensor against a trusted reference instrument and compensating for a consistent difference between readings.\u003c\/p\u003e\n\u003ch3\u003eFour Mist Levels\u003c\/h3\u003e\n\u003cp\u003eRather than operating only at minimum or maximum output, the humidifier provides four distinct mist settings, giving growers more flexibility when environmental demand changes through the day or when the same unit is used across spaces of different sizes.\u003c\/p\u003e\n\u003cp\u003eThe humidifier defaults to Mist Level 4 when started unless previous settings are restored through the memory function.\u003c\/p\u003e\n\u003ch3\u003eUp to 29 Hours of Runtime\u003c\/h3\u003e\n\u003cp\u003eMars Hydro lists a maximum runtime of approximately 29 hours. Actual runtime depends on the selected mist level and whether the humidistat is cycling the unit on and off.\u003c\/p\u003e\n\u003cp\u003eAt lower mist output or when the room frequently reaches its target humidity, the large tank can reduce how often the system needs attention.\u003c\/p\u003e\n\u003ch3\u003eFlexible Mist Distribution\u003c\/h3\u003e\n\u003cp\u003eThe humidifier includes multiple hoses and nozzles so mist can be directed where it is needed instead of simply rising from the top of the machine. Included accessories support several different configurations for plant rooms and grow tents.\u003c\/p\u003e\n\u003cp\u003eThe manual shows long and short telescopic hoses, straight sections, multiple directional nozzles, and multi outlet fittings that can distribute mist toward more than one area.\u003c\/p\u003e\n\u003ch3\u003eTelescopic Hose System\u003c\/h3\u003e\n\u003cp\u003eThe long telescopic hose can extend from approximately 15.75\" to 61.81\", while the shorter hose sections provide additional routing flexibility.\u003c\/p\u003e\n\u003cp\u003eMars Hydro recommends avoiding sharp bends, including U shaped or O shaped hose routing, because condensed water can collect inside the hose and potentially cause leakage.\u003c\/p\u003e\n\u003ch3\u003eMulti Tent and Plant Room Setup\u003c\/h3\u003e\n\u003cp\u003eThe included hose and nozzle system makes the humidifier adaptable to several layouts, including directly inside a plant room, beside a grow tent with the hose routed inside, across multiple areas using split nozzle configurations, or with elevated mist outlets for improved distribution.\u003c\/p\u003e\n\u003cp\u003eMars Hydro's manual illustrates dedicated layouts for both planting rooms and grow tents.\u003c\/p\u003e\n\u003ch3\u003e1 to 12 Hour Timer\u003c\/h3\u003e\n\u003cp\u003eThe humidifier includes a programmable timer adjustable from 1 to 12 hours in one hour increments. When the selected timer period expires, the humidifier automatically shuts down.\u003c\/p\u003e\n\u003cp\u003eThe timer can also be disabled when continuous humidistat based operation is preferred.\u003c\/p\u003e\n\u003ch3\u003eRemote Control\u003c\/h3\u003e\n\u003cp\u003eA remote control is included for adjusting major functions without using the front panel. This is particularly useful when the humidifier is positioned outside a grow tent or in a location where direct access is inconvenient.\u003c\/p\u003e\n\u003cp\u003eMajor settings can be adjusted from either the touch controls or the remote.\u003c\/p\u003e\n\u003ch3\u003eScreen Sleep Mode\u003c\/h3\u003e\n\u003cp\u003eThe display automatically dims after approximately 30 seconds of inactivity while the humidifier continues operating. A dedicated screen off function can also immediately darken the display.\u003c\/p\u003e\n\u003cp\u003eThis helps reduce unnecessary light inside growing environments during dark periods while maintaining humidity control.\u003c\/p\u003e\n\u003ch3\u003eMemory Function\u003c\/h3\u003e\n\u003cp\u003eThe humidifier remembers previously selected operating settings after restart, including mist level, timer, and humidity target. This reduces the need to completely reprogram the humidifier after each power cycle.\u003c\/p\u003e\n\u003ch3\u003eAutomatic Low Water Protection\u003c\/h3\u003e\n\u003cp\u003eThe humidifier monitors water level during operation. If the water level remains below minimum for approximately 30 seconds, the warning indicator flashes and an alarm sounds before the humidifier automatically shuts down.\u003c\/p\u003e\n\u003cp\u003eThis prevents the ultrasonic system from continuing to operate without sufficient water.\u003c\/p\u003e\n\u003ch3\u003eQuiet Ultrasonic Operation\u003c\/h3\u003e\n\u003cp\u003eMars Hydro rates operating noise below 40 dB(A). The ultrasonic vaporizer produces cool mist without the heating elements used in warm mist humidifiers, making the unit suitable for indoor environments where noise and additional heat should be minimized.\u003c\/p\u003e\n\u003ch3\u003eMobile Four Wheel Design\u003c\/h3\u003e\n\u003cp\u003eThe humidifier is designed for easier movement between rooms or growing areas. Its tall floor standing body sits on a wheeled base, helping operators reposition the full size 15L unit without lifting it each time.\u003c\/p\u003e\n\u003cp\u003eThis is especially useful when the humidifier is shared between several tents or plant areas.\u003c\/p\u003e\n\u003ch3\u003eCleaning and Water Quality\u003c\/h3\u003e\n\u003cp\u003eMars Hydro recommends using distilled water to minimize mineral buildup and cleaning the unit at least weekly. The manual recommends a 1:1 mixture of water and white vinegar or citric acid, soaked for at least 10 minutes before cleaning the tank, sink, base, atomizer, and air inlet screen.\u003c\/p\u003e\n\u003cp\u003eStale water should also be replaced regularly, and the tank should be emptied completely before long term storage.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMars Hydro 15L Ultrasonic Humidifier\u003c\/li\u003e\n\u003cli\u003eRemote control\u003c\/li\u003e\n\u003cli\u003eWired temperature and humidity sensor probe\u003c\/li\u003e\n\u003cli\u003e2 long flexible telescopic hoses\u003c\/li\u003e\n\u003cli\u003e4 short flexible telescopic hoses\u003c\/li\u003e\n\u003cli\u003eLong straight pipe\u003c\/li\u003e\n\u003cli\u003e4 short straight pipes\u003c\/li\u003e\n\u003cli\u003e2 way nozzle\u003c\/li\u003e\n\u003cli\u003e3 way nozzle\u003c\/li\u003e\n\u003cli\u003e4 way nozzle\u003c\/li\u003e\n\u003cli\u003eQuad directional nozzle\u003c\/li\u003e\n\u003cli\u003eCleaning and fixing kit\u003c\/li\u003e\n\u003cli\u003e3 Velcro straps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMars Hydro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eMH Humidifier 15L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidifier Type\u003c\/td\u003e\n\u003ctd\u003eUltrasonic Cool Mist\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTank Capacity\u003c\/td\u003e\n\u003ctd\u003e15L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Mist Output\u003c\/td\u003e\n\u003ctd\u003e1.6L\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMist Level 1\u003c\/td\u003e\n\u003ctd\u003e0.51L\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMist Level 2\u003c\/td\u003e\n\u003ctd\u003e0.66L\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMist Level 3\u003c\/td\u003e\n\u003ctd\u003e1.23L\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMist Level 4\u003c\/td\u003e\n\u003ctd\u003e1.60L\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoverage Area\u003c\/td\u003e\n\u003ctd\u003eUp to 861 ft²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Runtime\u003c\/td\u003e\n\u003ctd\u003eApprox. 29 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Setting Range\u003c\/td\u003e\n\u003ctd\u003e35% to 95% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Adjustment\u003c\/td\u003e\n\u003ctd\u003e5% increments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTimer\u003c\/td\u003e\n\u003ctd\u003e1 to 12 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTimer Adjustment\u003c\/td\u003e\n\u003ctd\u003e1 hour increments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Power\u003c\/td\u003e\n\u003ctd\u003e100W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Voltage\u003c\/td\u003e\n\u003ctd\u003eAC 100 to 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e50 \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise Level\u003c\/td\u003e\n\u003ctd\u003eLess than 40 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e11.81\" x 9.05\" x 22.95\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e11.24 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMist Output Height\u003c\/td\u003e\n\u003ctd\u003eApprox. 31.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Hose Hanging Height\u003c\/td\u003e\n\u003ctd\u003eApprox. 74.8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Method\u003c\/td\u003e\n\u003ctd\u003eTouch and Remote\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Monitoring\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Monitoring\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Calibration\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Calibration\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow Water Shutoff\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScreen Sleep Mode\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Function\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMobility\u003c\/td\u003e\n\u003ctd\u003eWheeled base\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWaterproof Rating\u003c\/td\u003e\n\u003ctd\u003eNot IP65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eIndoor growing, home, office, plant rooms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 Year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Mars Hydro","offers":[{"title":"Default Title","offer_id":50153020063994,"sku":"MH-HUMID-15L","price":159.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/7487\/9482\/files\/51eeb0cb-7c06-4131-9730-b09cd9dc4c6d.png?v=1787511811","url":"https:\/\/cultivasupply.com\/products\/mars-hydro-15l-ultrasonic-cool-mist-plant-humidifier","provider":"Cultiva Supply","version":"1.0","type":"link"}